| Acronym | Meaning |
| BOO | Bond Orientational Order |
| RCCSD | (spin) Restricted CCSD |
| NRTI | Nucleoside Reverse Transcriptase Inhibitor |
| ICL | Interface Control Layer |
| ANCA | Anti-neutrophil Cytoplasmic Antibodies |
| AIHA | American Industrial Hygiene Association |
| EFV | Electric-field-variant Function (in CI Method) |
| RSRG | Real-space Renormalization Group (method In Calcn. Of Green Functions For Electrons In Crystals) |
| AGS | Alternating Gradient Synchroton |
| SWKB | Supersymmetric Wentzel-Kramers-Brillouin (quantum Method) |